1. E.A. Alluisi, in: 34th Annual Proceedings of the Human Factors Society, Human Factors Society Inc, Santa Monica, CA (1990).
2. M.F. Hitchcock, A.D. Baker and J.R. Brink, in: Proceedings of Computer-Aided Control System Design, IEEE1994.
3. M. Onosato, K. Iwata. CIRP Annals-Manufacturing Technology (1993).
4. V.T. Do, M. Halatchev and D. A. Neumann, in: Proceedings of the 33rd Hawaii International Conference on System Sciences, (2000).
5. W.X. Xu, Y. Wei and Y. Fan: Computer & Industrial Engineering . Vol. 42 (2002), p.199.